this gets rid of a whole bunch of warnings

I checked. They are intact since being added, so we don't need to add
extra copyright notices in them.

I still need to put in a `host_information.py` discussion, as well as
fixing the install location of host_information...

if code doesn't run, fix the -rpath thing in the cmake config.

We have many, some with generic names, so it's probably safer this way.

Update cmake -- remove previous system and use find instead (including find fftw from morse) -- export config for external reuse -- update README to give more information

old files can't be compiled, and new cmake config wants to compile
everything.
successfuly compiled library on my laptop, but installation fails.

package is broken, when I try `run_all_tests.sh" I get a linking
problem:

compiling code with command
g++ symmetrize_test-single-v2.21.2.post31+gb443b203.dirty.cpp -o symmetrize_test-single-v2.21.2.post31+gb443b203.dirty -Wall -Wfatal-errors -O2 -g -mtune=native -march=native -ffast-math -std=c++11 -fopenmp -gdwarf-2 -rdynamic -fPIC -I/usr/lib/openmpi/include -I/scratch.local/chichi/installs/include -I/scratch.local/chichi/installs/py3/lib/python3.5/site-packages/bfps-2.21.2.post31+gb443b203.dirty-py3.5.egg/bfps/cpp -L/usr/lib/openmpi/lib -L/scratch.local/chichi/installs/lib -L/scratch.local/chichi/installs/lib64 -Wl,-rpath=/usr/lib/openmpi/lib -Wl,-rpath=/scratch.local/chichi/installs/lib -Wl,-rpath=/scratch.local/chichi/installs/lib64 -L/scratch.local/chichi/installs/py3/lib/python3.5/site-packages/bfps-2.21.2.post31+gb443b203.dirty-py3.5.egg/bfps -Wl,-rpath=/scratch.local/chichi/installs/py3/lib/python3.5/site-packages/bfps-2.21.2.post31+gb443b203.dirty-py3.5.egg/bfps -lbfps -lhdf5 -lfftw3_omp -lfftw3f_omp -lfftw3_mpi -lfftw3 -lfftw3f_mpi -lfftw3f -lmpi_cxx -lmpi -fopenmp
/scratch.local/chichi/installs/py3/lib/python3.5/site-packages/bfps-2.21.2.post31+gb443b203.dirty-py3.5.egg/bfps/libbfps.a(symmetrize_test.cpp.o): In function `symmetrize_test<float>::do_work()':
symmetrize_test.cpp:(.text._ZN15symmetrize_testIfE7do_workEv[_ZN15symmetrize_testIfE7do_workEv]+0x42): undefined reference to `fftw_planner_string_to_flag[abi:cxx11]'
symmetrize_test.cpp:(.text._ZN15symmetrize_testIfE7do_workEv[_ZN15symmetrize_testIfE7do_workEv]+0xc8): undefined reference to `fftw_planner_string_to_flag[abi:cxx11]'
/scratch.local/chichi/installs/py3/lib/python3.5/site-packages/bfps-2.21.2.post31+gb443b203.dirty-py3.5.egg/bfps/libbfps.a(symmetrize_test.cpp.o): In function `symmetrize_test<double>::do_work()':
symmetrize_test.cpp:(.text._ZN15symmetrize_testIdE7do_workEv[_ZN15symmetrize_testIdE7do_workEv]+0x42): undefined reference to `fftw_planner_string_to_flag[abi:cxx11]'
symmetrize_test.cpp:(.text._ZN15symmetrize_testIdE7do_workEv[_ZN15symmetrize_testIdE7do_workEv]+0xc8): undefined reference to `fftw_planner_string_to_flag[abi:cxx11]'
collect2: error: ld returned 1 exit status

the plan is to use the generic `CMakeLists_package.txt` for calling
`cmake` from within python scripts. Otherwise the python script would
write something like `CMakeLists.txt`, but with an executable instead of
a library.